1. Armstrong, N., 1993. A study of phonological variation in French secondary school pupils. PhD thesis, University of Newcastle upon Tyne.
2. Deletion of French /l/;Armstrong;Journal of French Language Studies,1996
3. La variation sociolinguistique dans le lexique français. Zeitschrift für romanische;Armstrong;Philologie,1998
4. The sociolinguistic gender pattern in French;Armstrong;Journal of French Language Studies,1998
5. The loss of the negative particle ne in French;Ashby;Language,1981